John m



(ModeL) J. M. GOOKINGHAM.

FASTENING FOR WATCH GASES. No. 244,553. Patented July 19, 1881.

INvENTN-m BY llmmig ATTORNEYS.

mm", o. c.

s m N; T I W UNITED STATES PATENT OFFICE.

JOHN M. OOOKINGHAM, OF HUDSON, NEW YORK.

FASTENING FOR WATCH-CASES.

SPECIFICATION forming part of Letters Patent No. 244,553, dated July 19, 1881,

(Model.)

To all whom it may concern:

Be it known that I, JOHN M. COOKINGHAM, of Hudson, in the county of Columbia and State of New York, have invented a new and useful Improvement in Fastenin gs for Watch- Cases, of which the following is a full, clear, and exact description.

The object of my invention is to provide secure and inexpensive fastenings that are durable and will not require openings cut in the inner case.

My invention is applicable to hunting and open cases and key and stem winders; and it consists in a locking-pendant fitted to slide on a stem and formed to lap over the case.

In the accompanying drawings, Figure 1 is a sectional elevation of a watch-case of my improved construction, and Fi 2 is an end view of the pendant with the crown removed.

Similar letters of reference indicate corresponding parts.

A is the ring-body of the case, fornn-d or provided with the stem a, which,as shown, is rigid, but in stem-winders will be fitted for rotation in the usual manner by the crown b.

c d are the back caps of the case, hinged and held closed in the usual manner.

6 is the crystal, andfis the fronthingcd cap, which will be fitted with an opening-spring at the hinge, as usual.

Around the stem is a tubular pendent piece, g, the lower end of which is formed at one side with a beveled lip, 9, that laps over the edge of the cap f, whereby the cap is retained closed.

The base of stem a is squared, and pendant g is correspondingly apertured, so that the pendant may not turn on the stem, and the piece 9 is recessed or formed cup-shaped to receive the spiral spring it, that is around the stem between a nut, t, thereon and the bottom of the recess in piece g, whereby the latter is forced down by the spring and lip g retained upon cap f by spring-pressure. The spring might be retained by the crown 1) instead of nut i; but I prefer to use the nut, as it will prevent the pendant from coming off when the crown is unscrewed.

To the pendant g is attached the ring 7., which is to be drawn upon at the same time pressure is put on the crown, for moving the pendantendwiseandreleasingthecap. Thelip g and edge of cap f may have a suitable bevel, so that pressure on the cap in closing it will move the pendant and allow the cap to be caught. Y Vith open-face watches this lockingpeudant may be applied in connection with the back cap.

It will be seen that this fastening is outside the case, and neither the ring or bezel of the crystal, nor other portion of the case, need therefore to be perforated in fitting the fastenings. The lip g of the pendant being of soft metal, the cap will not be worn, as is the case when a steel spring holds the cap.

The fastenings shown are inexpensive in first cost and can be repaired with facility.

Having thus described my invention, I claim as new and desire to secure by Letters Patent In a fastening for watch-cases, the post provided with a safety-nut which holds the pendant secnrely to the case independently of the outer crown, and allows the pressure of the pendant on the case to be varied, as described.

JOHN M. COOKINGHAM.

Witnesses:

HORACE R. PECK, LoU HALLENBEGK. 

